# SDR 2008UALA03334

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 11, 2008
- Submitted: July 1, 2008
- Operation: Air carrier
- Aircraft: N530UA
- Make and model: Boeing 757222
- Aircraft serial: 25043
- Aircraft time: 57,646 hours, 21,289 cycles
- Engine: Pwa PW2037
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Acm
- Part number: 6319001
- Condition: Faulty
- Location: A/C Bay
- Stage of operation: IN
- How discovered: O
- Nature of condition: B, J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2008UALA03334

## Discrepancy

AFTER TURNING ON APU & PACKS SMOKE IN CABIN SET OFF SMOKE ALARMS.  ACM FAILURE, POSSIBLE BEARING FROZEN.  REPLACED ACM, OPS CHECK GOOD.

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